Wet fhjf transfer illuminator



A. W. BUCK Sept. 3, 1935.

WET FILM TRANSFER ILLUMINATOR Filed Jan. 29, 1935 2 Sheets-Sheet l Q .W Re f m f,

3 Bm M .1.3.

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MINI

A. W. BUCK Sept. 3, 1935.

WET FILM TRANSFER ILLUMINATOR 2 Sheets-Sheet 2 Filed Jan. 29, 1955 @GOGO @@@GQ GG@ OGCDGGO@ ff'f'/ l Patented sept. 3, 1935l 2,012,940

UNITED STATES PATENT OFFICE WET mail TRANSFER IILUMINATOE arthur w. auch. st. Louis, M. artnet te Buer X-Ograph Company, St. Louis, Ho., a corpora.- tion of Missouri muniti.: Jmunly 29, 1935, Sull! No. 8,973

9 Claims. (Cl. 40-132) This invention relates to X-ray nlm viewing iront door is opened, the rear door into the darkapparatus and particularly means for viewing room will be locked and the lamps and ian will X-ray nlms while they are still wet. Considerbe energized and whereby when the rear door 'able inconvenience is caused in the X-roy darkis unlocked, the lamps and fan will be de-enerrooms of laboratories and hospitals by doctors sized and the iront door will be locked against 5 who bring in a patient and desire to know that Opening. the X-ray pictures or radiographs made o! this A fiirhl Dbieot iS t0 provide 8 light lked patient are satisfactory before the ventilator screened on either side by a grille, this patient as, should something be wrong with these ventilator being lo constructed that it is possible 1U radiographs, it might be extremen; inconvenient for the doctor to converse with the darkroom 10 to get the patient back again. Another and technician, requesting certain radiographs to be similar condition arises in the setting of frac- Plwed in tho illilmlmfr 0r Changed, etc. tures. putting a limb in a cast, etc., following Other objects have to do with the details of .Y which a radlograph is always made to show that oomtruotilm and arrangement Oi' Darts as will 1'5 the bone is in proper alinement before dismissappel? non 111117 hminfter- 15 ing the patient. My invention is illustrated in the accompany- Under ordinary circumstances, it is necessary ing drawings Whliloinrthat the doctor and patient wait for the aims Finire 1 is a front elevation of a wet film exto be developed, nxed, dried, etc. before they can hlblwi wntrlmted in accordance With my i11- be inspected in order to determine if the nlms vention. the front being partly broken away. 20 aro Satisfactory. Then the doctor, usually in a Figure 2 is a longitudinal section on the line hurry, causes a lot of inconvenience by going 2-2 0f Fiill'e 1 and 3- lnto the X-ray darkroom and fishing around Figure 3 is a vertical section on the line 3-3 among ythe various films being developed and o! Flsiin 1.

niied in an eil'ort to nnd the nlms of his patient, Figure 4 is a vertical section on the line 4--4 25 in order to see them as quickly as possible. This 0f Piiire 1. is annoying to the operators of the darkroom as Figure 5 il a wiring diagram of the connecon account of the darkness therein, the doctor 1110316 fol' the 111MB, the fan and the 1001' 0D- is likely to tip over something or run into someerated switch.

3o thing, get in the way and meddle with nlms in Retorno: to there drawingsy l0 designates e 30 the process of nxing or washing. rectangular easing of any suitable construction The general object of my invention is to prohaving at its forward end the rearwardly turned vide an X-ray nlm illuminator or viewer which and than laterally turned flanges Il to which a is so constructed that it may be dispooed in a door l2 is hinged by hinges I8. The free margin its` wall between the darkroom and a viewing room o! the door seats against an inturned flange il and which is so constructed that the operator which extends vertically and is carried by a holin the darkroom may open the door at the rear low partition designated generally I5 and formed o! the exhibitor or Illuminator, the front door o! sheet metal wall I6 and the sheet metal wall being closed. dispose a nlm in the exhibitor, I1. It will thus be seen that two compartments iiclose the rear door into the darkroom, notify the are provided, namely. the compartment A and 40 doctor in the exhibition room and the doctor can the mpartmont B. the compartment A being then open the front door and at the same time for the purmse of exhibiting the nlm while the illuminate the nlm so that he can observe it carecompartment B is a Ventilating compartment fully without handling the nlm and, o! comse, which will be later described.

without any light entering the darkroom. The rear of compartment A is open and is 45 Another object is to provide a construction of closed by a door frame I8 which is operatively this character in which lamps are used for ilhinged at is to the rear wall of the casing. This luminating the nlm and in which means is proframe .lipports within it the rectangular lamp vided 'ior preventing the heat from these lamps housing 20. This lamp housing at its front is -from melting the nlm, this means consisting of provided with the glass pane 2|, and extending 50 a (an for circulating air within the lamp space vertically through the rear portion of this housor chamber. ing 20 is a bmp supporting plate 22 which car- A further object is to provide means whereby rias the bass of the incandescent bulbs 23. This neither door can be opened unless the other door plate I! is pertorated as at 2l throughout its 66 is closed and provide means whereby when the length. `The mi wail 25 of the lamp housing 55 carries upon it a fan housing 26 in which is disposed the elect-ric fan 2 and which may be of any suitable type operated by the usual motor 28. Carried upon one corner of the lamp housing 20 is a bracket 29 which projects forward from the lamp housing and which supports a rectangular frame 39 carrying at its upper end the spring clips 3i whereby the lm may be supported. Clips 32 may be provided at the lower end of the frame for gripping the lower end of the iilm F.

It will be understood that this frame designated generally 30 may be rigidly mounted on the bracket 29 or that this frame 30 may be mounted in any other suitable manner in connection with the lamp housing though I prefer the mounting which is illustrated as this has been found thoroughly practical. By this means the film carrier and the lm supported thereon is supported immediately in front of and parallel to the glass pane 2| so that when the lamps 23 are energized the lm will be illuminated by light passing through the film to the daylight side of the casing I0.

For the purpose of latehing the door I2 in its closed position and latching the rear door I8 in its closed position, I mount upon the outer end of the partition I5, that is, the daylight side of this partition, a rotatable latch 33 which includes the latch bar 34. This when turned into a horizontal position bears against a resilient keeper 35 mounted upon the free margin of the door I2. When the bar 34 is rotated from a vertical position to a horizontal position, with the door I 2 closed, it bears against this spring keeper and extends directly across it and resilently forces the door I2 to its closed position against the seat I4. When the latch bar 34 is turned to a vertical position, however, it permits the door I2 to be opened. The door I8 also carries upon it the reverted or U-shaped spring keeper 36 and the side wall of the partition I also earriesupon it a rotatable handle 31 having a latch bar 38 which when turned to a horizontal position bears against the resilient keeper 36 and urges the door I8 to its closed position.

For the purpose of preventing one door from being unlatched if the other door be opened, I provide a bolt or locking rod 39 sliding in guides 40 which locking rod has a length greater than the depth of the casing II). This locking rod, as shown in Figure 4 is disposed above the centers of the locking handles 33 and 3I. Assuming, therefore, that it be desired to open the door I8 on the darkroom side for the insertion of a lm,

the operator pushes inward on the projecting endy of the locking rod 39 which pushes this locking rod into a position to permit only a partial and very slight rotation of the latching handle 33 and the latch bar 34, which rotation is so slight that the latch bar does not release its engagement with the keeper 35 of door I2. The forcing inward of the bolt 39 from the darkroom side pushes it beyond the path of travel of the latching bar 38 so that when the bolt 39 has been pushed al1 the way in, the handle 37 may then be turned to release the engagement between the latch plate 38 and the keeper 36 and permit the door I8 to be swung open on its hinges I9. The film may then be put in place and the door closed. The handle 31 is turned to its horizontal position which clears the bolt 39. If the doctor wishes now to view the lm, he pushes in on the bolt 39 from the daylight side of the casing or cabinet, pushing this bolt into a position to prevent the rotation of the locking plate 38 but permitting the rotation of the handle 33 and locking plate 34 to release the door I2. This action causes the energizing of the lamps 23 and the energizing of the motor 28. To this end the motor and lamps are connected in the circuit of a switch of any ordinary suitable construction designated generally 4 I. This switch includes a pivoted arm 42 having a head disposed between two Shoulders or collars 43 mounted upon the bolt 39. Thus when the bolt is shifted inward from the daylight side of the cabinet to the darkroom side, the arm 42 is shifted to a position to switch on the lights and the fan, but when the bolt 39 is shifted outward from the darkroom side, the arm 42 is shifted to switch oi the lights and the fan. It Will be seen that the lights and the fan cannot be switched on unless the darkroom door is closed and latched.

The compartment B is designed to provide means for the inlet of air, ventilation purposes, and also for the purpose of permitting the doctor to converse with the darkroom technician without permitting the passage of light from the lightroom to the darkroom. To this end there extends transversely through the middle portion of this compartment B a plurality of corrugated baffles 44. 'Ihese bales are deeply corrugated or formed of V-shaped portions at a plurality of points, the V-shaped portion of one bafe extending into butof course, not iitting closely against the V-shaped portion of the next adjacent baiiie, etc. This prevents the passage of light transversely through the baffles from one side of the baffles to the other but permits the passage of sound. I do not wish to be limited to the particular form of the bafiles which I have illustrated as this might be varied in many Ways.

The front of the compartment B is closed by a grid 45 which may be made more or less ornamental and the rear of the compartment is also i closed by a grid 46. These grids permit air to be drawn into the compartment B and through the spaces between the baffles, and the rear margin of the partition wall I1 is provided with a series of openings 4'I which allows the air to pass into the interior of the hollow partition I5. Air may be drawn into the compartment A from this hollow partition through the openings 48 which are out of alinement with the openings 4'I. This air is drawn into the lamp housing 2U through suitable perforations and out through the perforations 24 in the plate 22 and expelled through perforations in the fan housing 29. Thus the fan causes the circulation of air through the fan housing and also the circulation of air around the lm without causing such a draft of air as would tend to iiutter the film. Thus the heat of the lamps is carried off and does not in any way affect the film while the ilm is additionally protected by the glass pane 2I which is interposed between the film and the lamps.

It will be understood, of course, that every portion of the casing is made light-tight and that the doors may close against fiber pads so as to prevent the possibility of light breaking through at the hinges. In order to absolutely prevent the passage of light through the hinge I9 when the door i2 is opened, I provide upon the rear wall i8 adjacent the hinge the supporting block 49 and provide the seat 53 against which the margin of the wall I8 bears when the door is closed.

For the purpose of catching any water which may drip from the wet lms supported on the hanger 90, I provide a trough 5I mounted upon brackets carried by the lower margin of the front @einem walker the lamp hcannglIL-tms'trough being mferably made 'of me this tower odge or: thafilnr hangers downward into this @wahrend .the .nlm themore vmy water into the trough. "t e i,

Rlteition may Ae'iled to the i'act that with this construction air drawn into the interior of the exhibitor from the darkroom is not expelled through the grid into the lightroom where the doctor and his patient are sitting, but is expelled back into the darkroom so that very unpleasant fumes or odors incident to developing, nxing, etc. are not projected into the lightroom through the grid.

In Figure 4 the compartment 52 is simply a knock-out" or junction box for the service connection which extends across the upper front corner of the ventilator section and opens into the hollow partition I5. In Figure 3 the partition 53 dennes a compartment at the upper end of the main casing which extends from the hollow partition I5 and which acts as a conduit for the electric wire to the light sockets.

While I have illustrated certain details of construction and arrangement ot parts, I do not wish to be limited to these details as it is obvious that these might be modiiied in many ways without departing from the spirit of the invention as defined in the appended claims.

What is claimed is:-

1. A wet film exhibitor including a light-tight casing, a rear door and a front door for the casing and having light-tight engagement therewith, the rear door carrying nlm illuminating means, lm supporting means disposed in front of the illuminating means, and means for preventing either door from being opened when the other door is closed.

2. A wet iilm exhibitor including a light-tight casing, a rear door and a front door for the casing and having light-tight engagement therewith, the rear door carrying film illuminating means, nlm supporting means disposed in front of the illuminating means, means for latching each of said doors in a closed position, and means for preventing the unlatching of either door when the other door has been unlatched.

3. A wet iilm exhibitor including a light-tight casing, a rear door and a front door for the casing and having light-tight engagement therewith, the rear door carrying film illuminating means, i'llm supporting means disposed in front of the illuminating means, means for iatching each of said doors in a closed position, means for preventing the unlatching of either door when the other door has been unlatched, and means for automatically energizing the illuminating means when the rear door latching means is held from released movement and for de-energizing the illuminating means when the rear door is unlatched and the iront door is held from unlatching movement.

4. A wet nlm exhibitor of the character described including a light-tight casing having a front door and a rear door, electric lamps mounted upon the rear door, a ian mounted upon the rear door, means carried by the rear door for supporting an X-ray film in front of said lamps, means for latching the rear door in a closed position, means for latching the iront door in a closed position, means'ior preventing the unlatching oi the front door when the rear door is unlatched, means for preventing the unlatching of the rear door when the iront door is unlatched, and means acting automatically when the rear door il preventedxrcn energizing the lamps and said fan. 1'

5. A yvretiilm `exhibitor' including a iight-tight casing havingront and rear doors, electric lamps carriedbrtherear door, means disposed in front oi said electric'l'amps for mpporting a nlm to be exhibited, a glass pane disposed between the lm and the lamps, an air circulating ian carried by the rear door, latching means for the rear door and for the iront door, means preventing the unlatching of the iront door unless the rear door is closed and latched, said means preventing the unlatching of the rear door until the front door is closed and latched, means acting upon the release of the iront door latching means to energize the lamps and the fan, and a light-tight voice carrying duct associated with the exhibitor and extending parallel thereto.

6. A wet film exhibitor including a light-tight casing divided into two compartments, one of said compartments having means for supporting and illuminating a wet nlm. the other compartment having front and rear grids and light baiiling means disposed between the grids, and an exhaust fan mounted upon one wall of the irst named compartment and discharging through the rear wall thereof, the inner wall of the second named compartment having openings leading into the second named compartment whereby air drawn into the second named compartment will be circulated through the first named compartment and injected rearward therefrom.

'7. A wet nlm exhibitor including a casing divided by a partition into a tllm display compartment and a sound conveying compartment, said last named compartment having grids in iront and rear and means disposed between the grids permitting the passage of sound but preventing the passage of light, the other of said compartments having a iront door and a. rear door, the rear door carrying iilm illuminating means, a suction fan carried by the rear door, means mounted within the casing ior supporting a illm in front of the illuminating means, and means for admitting air from the sound communicating compartment into the display compartment to furnish air to the fan, said means being constructed and arranged to prevent the passage of iight into the display compartment.

8. In a wet iilm exhibitor of the character described, a light-tight casing having a front door and a rear door, a fan adapted to draw air from within the casing, illuminating means for the interior of the casing, means for supporting an X-ray nlm between the front door and the illuminating means, means for latching the rear door in a closed position, means for latching the front door in a closed position, means for preventing the unlatching of the front door when the rear door is unlatched and for preventing the unlatching of the rear door when the iront door is unlatched, and means acting automatically when the trent door is opened for energizing the lamps and the fan.

9. A wet i'llm exhibitor including a light-tight casing having iront and rear doors, electric lamps carried by the rear door, a transparent pane disposed between the electric lamps and the front door, means disposed in front of said transparent pane for supporting the film to be exhibited, an air circulating fan carried by the rear door, latching means for the rear door and for the front door, means preventing unlatching of the iront door unless the rear door is closed and iatched, said means preventing the unlatching of the rearA door until the front door is closed and latched, and means acting upon the release of the front door latching means to energize the iamps and the fan, and a light-tight voice carrying duct associated with the exhibitor and extending parallel thereto, there being means permitting the passage of air from said duct into the interior of the fan casing and into the space within which the lamps are disposed and to the fan.

ARTHUR W. BUCK. 

